Given that the PV92 Alu primers are each 20 bp long and recognize sequences 376 bp apart (that is the length of sequence in between, but not including, the primers) in individuals without the Alu repeat, and the Alu repeat is 315 bp, what size DNA fragment would you expect to amplify from an individual with an Alu repeat on either chromosome? Enter just the number of base pairs.

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

Which of the following is a testable hypotheses?